I was watching this one drama, forget the name, where the main guy takes punishment for something that happens to the girl he loves and goes to jail. Well, after he gets out of jail, he meets her again years later and she's married someone else for the money. He wants revenge against her and then eventually falls in love with her step-daughter who is the female lead.

Well, I want to know if there are any where its the female lead who marries for the money or she has no choice, but then ends up with the male lead in the end.

Yeah, Innocent Man was the one I was talking about up top. I want to see if there are any where the one who betrays him is the female lead.

Marriage Not Dating - If I remember correctly, she ends up with the male lead. 
Yeah, but I'm looking for ones where she already loves the male lead before she does it.
Yeah, that's what happens in Innocent Man. I want ones where the love/crush is the female lead and he ends up with her. 
My Love Eun Dong popped in my mind immediately.

Most of the other shows I can think of are daily dramas 100 eps +

Actually.....

My Sunshine

New Tales of Gisaeng

My Secret Hotel

Koinaka
- Knock knock loving you
- Que Sera, Sera

And in "angel eyes" she doesn't marry the other man but is engaged with him.
Goddess of Marriage